29:29'must have', 'might have', 'should have' & 'can't have' to talk about the past: Live English Class
BBC Learning English
(April 28, 2010) Margot Gerritsen, Associate Professor of Energy Resources Engineering at Stanford, discusses the recent upswing in the development of large-scale solar projects, with elaboration on fast-track projects, the political, economic and financial barriers to implementation, and utility integration along with several current case project examples. Stanford University http://www.stanford.edu Stanford Energy Resources Engineering http://pangea.stanford.edu/ERE/index.php Stanford Energy Seminar http://energyseminar.stanford.edu Stanford University Channel on YouTube http://www.youtube.com/stanford
Published 2010-05-14 · Watch on YouTube ↗
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